skers ksers sekrs eskrs kesrs eksrs skres ksres srkes rskes krses rkses serks esrks sreks rseks ersks resks kerss ekrss kress rkess erkss rekss skesr ksesr seksr esksr kessr ekssr skser ksser ssker ssker ksser skser seskr esskr ssekr ssekr esskr seskr kessr ekssr ksesr skesr esksr seksr skrse ksrse srkse rskse krsse rksse sksre kssre sskre sskre kssre sksre srske rsske ssrke ssrke rsske srske krsse rksse ksrse skrse rskse srkse sersk esrsk sresk rsesk erssk ressk sesrk essrk sserk sserk essrk sesrk srsek rssek ssrek ssrek rssek srsek erssk ressk esrsk sersk rsesk sresk kerss ekrss kress rkess erkss rekss kesrs eksrs ksers skers eskrs sekrs krses rkses ksres skres rskes srkes ersks resks esrks serks rseks sreks
Note: these 'words' (valid or invalid) are all the permutations of the word skers. These words are obtained by scrambling the letters in skers.